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Losee, R.M.: Comparing Boolean and probabilistic information retrieval systems across queries and disciplines (1997)
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Willett, P.: Best-match text retrieval (1993)
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Petry, F.E.; Buckles, B.P.; Prabhu, D.: Fuzzy information retrieval using genetic algorithms and relevance feedback (1993)
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Bordogna, G.; Pasi, G.: ¬A fuzzy linguistic approach generalizing Boolean information retrieval : a model and its evaluation (1993)
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Witschel, H.F.: Global term weights in distributed environments (2008)
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